Source : Webster's Revised Unabridged Dictionary (1913)

Reiteration \Re*it`er*a"tion\ (-?"sh?n), n. [Cf. F.
   r['e]it['e]ration.]
   The act of reiterating; that which is reiterated.

Source : WordNet®

reiteration
     n : the act of repeating over and again (or an instance thereof)
         [syn: {reduplication}]